Polymers (A-level only) common mistakes

Common mistakes

• Confusing Addition and Condensation Polymerisation

  Students often confuse addition polymerisation with condensation polymerisation, particularly regarding the formation of small molecules.

  Fix itRemember that addition polymerisation does not involve the loss of any small molecules, while condensation polymerisation does.

• Incorrectly identifying the repeating unit

  Students often confuse the structure of the repeating unit with that of the monomer.

  Fix itEnsure that the repeating unit reflects the structure of the polymer formed, including all necessary linkages.

• Confusing hydrolysis with condensation polymerization

  Students often confuse the processes of hydrolysis and condensation polymerization.

  Fix itRemember that hydrolysis breaks down polymers using water, while condensation polymerization builds polymers by eliminating water.

• Confusing biodegradable and non-biodegradable polymers

  Students often incorrectly categorize polymers based on appearance rather than chemical structure.

  Fix itFocus on the chemical properties and sources of the polymers to determine their biodegradability.